No Mustard ㅠ.ㅠ

So my step sister like to take mayo and mustard, put it on a plate, mix it up, and dip things in it. Am I the only one that finds this disgusting? That's like eating a bowl of pure fat, and she does it like EVERYDAY!  So today I made a corn dog, and guess what? We are out of mustard! I have to have ketchup and mustard to eat a corn dog.   It doesn't taste the same if I can't mix ketchup and mustard to make orange sauce. I asked her if she used all the mustard and she LIED and told me her dad used it all in his sauce. My sister said that he has his own supply for his sauce. Then my step sister was like "Hehe, I did use it all." Ugh so angry! It's okay though because I overcooked the corn dog. -_-